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Last month, my nursery pigs were diagnosed with SIV. Why are the convalescent titers lower than the acute titers?

April 26, 2017acute Convalescent diagnosed last month lower Nursery Pigs siv titers

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Last month, my nursery pigs were diagnosed with SIV. Why are the convalescent titers lower than the acute titers?

1 Answer

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A Maternal antibody does not prevent SIV from infecting nursery pigs. It will interfere with antibody production in response to the acute infection. This will result in continued maternal antibody decay and an unexpected decline in the convalescent titer.